What was found
RTFL DUE TO NR 1 GEN AND NR 1 ELEC A/C BUSS INOP. OTHER A/C BUSSES WOULD NOT PICK UP LOAD. REPLACED NR 1 IDG. SHOP FOUND FAILED ROTOR. REPLACED LOG, ROTOR, SHAFT SEAL, & FILTER.
- Difficulty date
- October 5, 2007
- Submitted
- October 9, 2007
- Operation
- Air carrier
- Aircraft
- N128UA
- Make and model
- Boeing 747422
- Aircraft serial
- 30023
- Aircraft time
- 30,429 hours, 3,724 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2421 · AC Generator-Alternator
- Part
- Idg
- Part number
- 6819006
- Condition
- Failed
- Location
- Nr 1
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- G
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.